add math question

[doraemonkiller]

xy=27 and logxY + logyX =5/2
find x and y

anyone know the answer?

[sierk1]

What exactly do you mean by logxY and logyX? What are capital X and Y?

[doraemonkiller]

logxY
x at down

[camera]

u took additional math too?
gosh im bad in logarithm...

[sierk1]

Sorry I don't understand your notation. Do you mean by logxY=c that x to the power c equals Y (x^c=Y)?

[doraemonkiller]

i duno how to explain

[doraemonkiller]

xy=27 and LOGxY + LOGyX =5/2

sorry for double post

[camera]

urm im stuck here:

logxY + logyX =5/2

log Y / log X + log X / log Y = 5/2

[doraemonkiller]

urm im stuck here:

logxY + logyX =5/2

log Y / log X + log X / log Y = 5/2
yah me too
XY= 27
how to find X and Y

[camera]

ooers...
hrm, i got to this:

log yY / log yX + log xX / log xY = 5/2

1 / log yX + logyX = 5/2

now idk wut to do lorl

[Jane]

I got lost after 'maths question'

[TealArms]

ROFL! i am only in year 8 and i know what she means

erm 3x9? basicly if you have 2 letters togther you times them

[Krusty]

Jesus christ
I cant even read that

[OMGitsaROSS]

xy=27
lmao easy
you don't need that thing at the end.

One = 3
One = 9

To find out wich is wich you need to find out from the teacher wat x-y would equal, then you would be able to figure it out.
ie.
x-y = 6

x would = 9
y would = 3

[TealArms]

Jesus christ
I cant even read that
Lol it is simple

When you have letters together in maths you need to times them, so say
x=5 and y=2 so if you had xy it would be xy= 10 or in other words 5 x 2 basicsly putting letts instead of words lol, have you lot not done that yet?

Edit: what he said!^^

[OMGitsaROSS]

I should be a homework helper :)

*pm's sierk for a new group*

[TealArms]

I should be a homework helper :)

*pm's sierk for a new group*
Thats a good idea, btw how old are you?

[Krusty]

Lol it is simple

When you have letters together in maths you need to times them, so say
x=5 and y=2 so if you had xy it would be xy= 10 or in other words 5 x 2 basicsly putting letts instead of words lol, have you lot not done that yet?

Edit: what he said!^^
Rofl i get it now
;]

[TealArms]

Rofl i get it now
;]
Ye lol

[Rawr]

Maths is my worst subject, your like talking jibberish to me. :)

[TealArms]

Its worry sierk doesnt know what we mean

[iAdam]

A banana this colour:

[doraemonkiller]

logxY + logyX =5/2
how to do this then ?!

this is not algebra everyone ,is log

[TealArms]

logxY + logyX =5/2
how to do this then ?!

this is not algebra everyone ,is log
Was the other one right?

[Mentor]

xy=27
lmao easy
you don't need that thing at the end.

One = 3
One = 9

To find out wich is wich you need to find out from the teacher wat x-y would equal, then you would be able to figure it out.
ie.
x-y = 6

x would = 9
y would = 3



You wana guess what the second bit is actaly for now?

Theres a reason i droped maths, to much thinking but anyway

Premis
xy=27 and logxY + logyX =5/2

Exsplination
What we know
X*Y = 27

And
logxY + logyX =5/2
5 dived by 2 is 2.5 so

log X Y + log Y X = 2.5

Like boro Got, we can take a guess at what X and Y could be, we then run em threw the second equasion to figure out which is which.

Hypthetoicaly
If
x = 9
y = 3

log9 3 + log3 9 = 2.5

Note: google cant do logorthums, :( i actaly have to think dag nabit

first of
log(3)9 = 2
log(9)3 = 0.5

2.5 is the correct answer no?

Answer

Then
X = 9
Y = 3

theres the answer to your math homework :D

(warning, im prone to dodgy maths and stupid yet obvios errors on the most simplic part of sums so u may wana double check all that

[TealArms]

ARH! i see now i have only done algebra but i was right lol, think it is pretty good for a year 8:)

[Mentor]

Who you responding to now?

if my post got missed look up for exsplination and answer

[TealArms]

Who you responding to now?

if my post got missed look up for exsplination and answer
You lol! sorry should of quoted

[Mentor]

You lol! sorry should of quoted
Just to check is lack of sleep catching up on me or are you actaly boro, as it kinda sounded like that in ya post if it was me which is why i asked "/

[-:Undertaker:-]

I Hate Questions Like That...

[TealArms]

Just to check is lack of sleep catching up on me or are you actaly boro, as it kinda sounded like that in ya post if it was me which is why i asked "/
Me and boro posted the same thing lol

[Mentor]

logxY + logyX =5/2
how to do this then ?!

this is not algebra everyone ,is log
Since google was not doing what i wanted it to, and i dont have a calc on me, and ive never actaly done logorthums before now, i quickly learnt it of here
http://sage.mc.yu.edu/kbeen/teaching/algorithms/resources/logarithms.html
(kinda helped by google for that)

Basicaly all it is, is setting a base then working out what number is needed in that base to give the second number :D


Me and boro posted the same thing lol

Ah ok? just a side effect of me being to lazy to read more than 1 or 2 posts in the thread then :D

[RlC]

I have an easier maths question

FACTORISING QUADRATICS (GRADE C WORK) EASY :)

x = letter x X = Multiply

x (squared) (x X x) - 16x + 63 =




answer down below --------->








Factors of 63 = 1,63 3,21 7,9
x(squared) - 16x + 63
Factors 7,9 add up to 16(x)
Answer = (x-7) (x+9)
Complicated if you dont understand it .

[doraemonkiller]

thx for the answer


You wana guess what the second bit is actaly for now?

Theres a reason i droped maths, to much thinking but anyway

Premis
xy=27 and logxY + logyX =5/2

Exsplination
What we know
X*Y = 27

And
logxY + logyX =5/2
5 dived by 2 is 2.5 so

log X Y + log Y X = 2.5

Like boro Got, we can take a guess at what X and Y could be, we then run em threw the second equasion to figure out which is which.

Hypthetoicaly
If
x = 9
y = 3

log9 3 + log3 9 = 2.5

Note: google cant do logorthums, :( i actaly have to think dag nabit

first of
log(3)9 = 2
log(9)3 = 0.5

2.5 is the correct answer no?

Answer

Then
X = 9
Y = 3

theres the answer to your math homework :D

(warning, im prone to dodgy maths and stupid yet obvios errors on the most simplic part of sums so u may wana double check all that

[Mentor]

I have an easier maths question

FACTORISING QUADRATICS (GRADE C WORK) EASY :)

x = letter x X = Multiply

x (squared) (x X x) - 16x + 63 =




answer down below --------->








Factors of 63 = 1,63 3,21 7,9
x(squared) - 16x + 63
Factors 7,9 add up to 16(x)
Answer = (x-7) (x+9)
Complicated if you dont understand it .

Why exsactly are you posting this if you dont need help with it "/

Plus
* = multiply
x = letter
There standard symboles...